Hardwired Interconnected Smoke Detectors,Photoelectric Smoke Alarm with 9V Battery Backup,Test/Silence Button, Hard Wired Fire Alarm for Home GS562A 4pack

Operated by AC 120V: SITERLINK hard wired smoke detectors will have a lifespan of 10 years or even longer; The device includes a 9V lithium battery that can be utilized in most cases even in the event of a power outage, so there’s no want to worry about power outages; If the battery level is low or an error occurs, it’ll automatically detect and notify, which is very user-friendly.
Accurate detection of photoelectric sensors: The highly precise technology of smoke detectors and photoelectric sensor smoke alarms help to quickly monitor smoke and fires, and provide fire warnings as soon as imaginable; A loud alarm signal (loudness>85dB) can evacuate the scene in a timely manner.
Wired Interconnection Alarm: The SITERLINK smoke detector has a hard wired interconnection function and can connect up to 12 devices. One of the most alarms detects smoke, whilst the other alarms will sound the same sound signal but without the red LED flashing, ensuring reliable safety in different rooms of your large house
Test the mute button and LED light: By pressing the test button, the fire alarm with the test button will be tested weekly; If there’s no fire hazard when an alarm signal is issued, you’ll press the test button for 2 seconds to silence it and remove any smoke, dust, or insects; Green LED light indicates operation, red LED light indicates alarm or warning
Built-in Indicator LED Light: SiterlinkGS562A model would be the traditional external indicator built-in, hidden LED indicator, the light is soft and visible, but will not disturb you and your family’s sleep, suitable for installation in the children’s room.